Operating Instructions Chapter 6
C4000
Commissioning
8 009 221/16-11-00 © SICK AG • Safety Systems • Germany • All rights reserved 37
6.3.3 Daily function checks of the protective device
The effectiveness of the protective device must be checked daily by a specialist or by au-
thorized personnel, using the proper test rod.
Note Always align the test movements along the hazardous area to be protected, never along the
mounting position of the light curtain.
How to check the effectiveness and proper function of the safety light curtain:
> Select the correct test rod depending on device resolution. If you operate the unit with
reduced resolution (display
r on the receiver), select the test rod using the following
table:
WARNING
No operation while the green or yellow LED is lit during the test!
If the green or orange LED lights up during the test even for a short period, work must stop
at the machine. In this case the installation of the safety light curtain must be checked by
specialized personnel (see chapter 4).
> Before inserting the test rod, check that the green LED is lit if the internal restart inter-
lock is deactivated and that the yellow LED flashes (“Reset required”) If this is not the case,
make sure that this condition is reached. The test is otherwise meaningless.
> Move the test rod slowly through the protective field to be tested, as shown in
in figure 28.
> Then move the test rod along the edges of the protective field, as shown in in
figure 28. This procedure allows you to test if the point-of-operation guard/reaching
behind protection is functioning properly (see 4.2 “Steps for mounting the device” on
page 25).
Note In both tests, the receiver of the C 4000 must show the red LED only.
Fig. 28: Daily checks of the
protective device
Physical resolution Reduction Effective resolution
14 mm 1 beam 22 mm
2 beams 30 mm
3 beams 37 mm
20 mm 1 beam 30 mm
2 beams 40 mm
Tab. 12: Selecting the test rod
under reduced resolution
R
Q
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